BIO 105 1st Edition Lecture 31Lecture (30)Freshwater – Symbolic (living together in intimate way) interactions- Species provide to the community and to each other.Do animals need plants? Yes- For food and energy- Animals need oxygen)- Shelter (mangrove roots provide habitat for many animals)Do plants need animals? Yes- Pollinations and fertilization - DecompositionBees = worth $15 billions per year in crop value.75$ of flowering plants rely on animals to help them reproduce. Pollinators – insects, bees, fruit batsDispersal – dandelions (wind dispersal) Species Diversity – variety of species within community- Species number – number of species - Species abundance – number of individuals - In recent past – Diversity was highest in Pleistocene era.- Human activities are resulting in loss of about 1 species per hour- Probably lost ~ 1 million- Several million more will be lost over the next few decades.Alter physical environment, it alters the biological community.Simplification – loss of species, species interactions, processes. Ecological impacts of channelization Substantial loss of habitat due to:• Increased flow velocity erosionsedimentationtemperaturesDecreasedwater qualitygroundwater rechargeThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.fish nesting habitatinsects to support food webstreamside vegetation insect habitatConservation biologist – concerned with the populations, community, and ecosystem. Animal rights proponents – focus on individual organism. Free Willy syndrome – fairy tale-like belief that releasing captive animals into the wild is usually a good
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